fix(vulkan): improve logging for device loss handling and frame skipping

- Enhanced logging to provide clearer messages when the Vulkan device is lost, including suggestions to restart the application or update GPU drivers.
- Added a mechanism to limit log frequency to avoid spamming during frame skips caused by device loss.
- Updated error messages to clarify the impact on video playback and rendering functionality.

Author: timfox

src/renderers/vulkan/tr_cmds.c

@@ -413,9 +413,16 @@ void RE_BeginFrame( stereoFrame_t stereoFrame ) {
 		ri.Printf(PRINT_DEVELOPER, "Vulkan: Skipping frame - not fully initialized\n");
 		return;
 	}
-	// Skip rendering if device is lost
+	// Skip rendering if device is lost (prevents video playback and all rendering)
 	if (vk.device_lost) {
-		ri.Printf(PRINT_DEVELOPER, "Vulkan: Skipping frame - device is lost\n");
+		// Only log once per second to avoid spam
+		static int last_log_time = 0;
+		int current_time = ri.Milliseconds();
+		if (current_time - last_log_time > 1000) {
+			ri.Printf(PRINT_WARNING, "Vulkan: Device is lost - rendering disabled. Video playback will not work.\n");
+			ri.Printf(PRINT_WARNING, "Vulkan: Try restarting the application or updating GPU drivers.\n");
+			last_log_time = current_time;
+		}
 		return;
 	}
 #endif

src/renderers/vulkan/vk.c

@@ -948,7 +948,8 @@ void end_command_buffer(VkCommandBuffer command_buffer, const char *location)
 			vk.device_lost = qtrue;  // Mark device as lost
 			ri.Printf(PRINT_ERROR, "Vulkan: Device lost during queue submit - GPU driver issue\n");
 			ri.Printf(PRINT_ERROR, "Vulkan: This may cause rendering artifacts or instability\n");
-			ri.Printf(PRINT_ERROR, "Vulkan: Rendering disabled until device recovery\n");
+			ri.Printf(PRINT_ERROR, "Vulkan: Rendering disabled. Try restarting the application or updating GPU drivers.\n");
+			ri.Printf(PRINT_ERROR, "Vulkan: Video playback may not work until device is recovered.\n");
 			// Don't terminate - let vk_queue_wait_idle handle cleanup
 		} else {
 			// For other errors, use the standard error handling